فَآبُوا بِالنِّهَابِ وَبِالسَّبَايَا وَأُبْنَا بِالْمُلُوكِ مُصَفَّدِينَا
They returned with captured goods and captives, while we returned with kings in fetters.
Ābū and ubnā both come from the root ʾ-W-B ('to return'). The first is third-person plural, while the second is first-person plural.
Al-nihāb refers to seized goods, al-sabāyā to captives, and muṣaffadīn to people bound in fetters. The poet contrasts the two wings' returns, culminating in an emphatic claim that his side captured kings. It reflects the values and violence of pre-Islamic martial boasting.